Choosing to End Process causes Windows to immediately kill the process. Right-clicking a process in the list allows changing the priority the process has, setting processor affinity (setting which CPU(s) the process can execute on), and allows the process to be ended. It has a more rudimentary user experience and can perform some additional actions.
The Details tab is a more basic version of the Processes tab, and acts similar to the Processes tab in Windows 7 and earlier. Both a graceful exit command and a termination command can be sent from this tab, depending on whether the command is sent to the process or its window. This tab shows the name of every main window and every service associated with each process.
Prior versions of Windows NT, as well as Windows 3.x, include the Task List application, are capable of listing currently running processes and killing them, or creating new processes. Task Manager was introduced in its current form with Windows NT 4.0. The program can be started in recent versions of Windows by pressing ⊞ Win+ R and then typing in taskmgr.exe, by pressing Ctrl+ Alt+ Delete and clicking Start Task Manager, by pressing Ctrl+ ⇧ Shift+ Esc, by right-clicking on the Windows taskbar and selecting "Task Manager", or by typing taskmgr in the File Explorer address bar. Task Manager can also be used to set process priorities, processor affinity, start and stop services, and forcibly terminate processes. It provides information about computer performance and running software, including name of running processes, CPU and GPU load, commit charge, I/O details, logged-in users, and Windows services. Task Manager, previously known as Windows Task Manager, is a task manager, system monitor, and startup manager included with Microsoft Windows systems. Task manager, system monitor and startup manager IA-32, x86-64, ARM and Itanium (and historically DEC Alpha, MIPS, and PowerPC)
Hard Disk Drive and Removable media type(s) are now shown, along with GPU temperature.
Screenshot of Task Manager in Windows 10 after the "2004/20H1" update, showing Performance tab, with individual CPU cores shown.